Lumber-piling jack



1,645,488 M. c. JOHNSON LUMBER FILING JACK Oct. 11, 1927.

Filed Nov, 39. 1926 i t J;

. gj'wuznto III Patented Oct. 11, 1927,

UNITED; stares r 1,645,488 rA r'EN o -Frcn.

Mnnv N o. JoHN'soN, or LoYA ro-n, eaL Fonm-m LUMBER-PIIIING= JACKi Application filedNoveinber 30,;19 26. 5e1jia1; No.; 151,745.

This invention relates todevices used for jacl-zingrup and piling pieces of; lumber and the gencralbbj eat of the invention; is, to pro ride a: device ofthis character whereby lam,- ber mayzbcihandlediinva yard .or mill tapermitlt he lumberitobe piled. gand stacked.

A further object is to provide a.,dev.ice of this character comprising-a bar. having means at one end whereby it may be, in.- serted between the boards of a pile of lumber, t-h'e otheren d of} the bar having a rotatable member thereon upon which a board may be rested, turned, and elevated so that a man u Jon the pile of lumber can grasp the board and drag it to the right place for piling.

My invention is illustrated in the accompanying drawings wherein Figure 1 is an elevation of my improved lumber jack showing it engaged with a pile of boards, the boards being in section;

Fig. 2 is a top plan view of the jack;

Fig. 3 is a section through the head of the jack.

Referring to these drawings 10 designates a bar which is preferably of metal and which, if made of metal, is'twisted at its middle so as to provide a flat portion 11 pointed at the end or tapered so that it may be inserted between the boards of a pile of lumber and provide a relatively elongated portion 12 disposed at right angles to the portion 11 and terminating in an eye 13. The upper surface 14 of this eye is disposed below the upper edge face of the portion 12.

Resting upon the seat so formed is an annular cup-shaped member or head 15 having a lower web 16 through which passes a' bolt 17, the head of the bolt bearing loosely against the bottom of the cup-shaped memher, and the opposite end of the bolt being screw-threaded.for engagement by a nut 18, the corner of which is rounded off. The cup shaped member 15 is capable of free rotation upon the bolt and the upper edge of this cup-shaped member is beveled. at 19 and formed in its upper edge with serrations 20.

Lumber in a yard is designed to be piled or stacked upon foundations and when first starting to pile on one of these foundations, the bar 10 is stuck in one of the posts of the foundation and the top rests against the load of lumber. The boards are then placed on this bar and jacked around to the man. on

the foundation. After a certain amount of lumber} has thus been... stackedpthe} bar, is stuck, into thep le-between the boards as -il lustrated 111,1 igurehand: thelumber is then jacked up to theman on the pile. By. put,-

ting the bar in, between the stacked boards,

apiece oflumber, as forinstance, a board,

ca -,be shifted onto. the. head 15 and then one endof the board may, be depressed,

.which will raise the other end up to theman on,th e stack and by making this headrotatable, it. is obvious that, the, board, may. be swung around into any direction desired. The man on the pile takes this board and drags it into its right place with the help of the man on the truck, ground or the car from which the lumber is being unloaded. By having the head 15 made with teeth, the board cannot slip, and yet the teeth will not mar the board as does the ordinary loading pin used'today in lumber yards for the pur pose of stacking boards. The teeth, therefore, are for the purpose of keeping the board from slipping while jacking up on the pile but these teeth do not mar the board for the reason that the toothed member or head turns as the board is turned. In jacking up, the board also may rest upon the upper edge of the portion 12. The rounded nut 18 is to be used for the board to rest on when first starting to build the pile of lumber, the bar being turned upside down.

It will be seen that the main object of this invention is to provide a device of the character stated whereby lumber may be handled in a yard or mill to permit the lumber to be piled and stacked without marrlng the lumber. The lumber piling jack which I have devised does not mar a board to such an extent that it causes a defect in grading after it is dried or ready for commercial use as the mark made by the jack will easily surface out or the planer will take off sufiilar cup-shaped member supported upon the eye and projecting above the bar, and a bolt loosely holding the member in place but permit-ting its rotation, the cup-shaped member being upwardly beveled at its upper edge and toothed.

3. A jack for piling lumber comprising a bar having an eye at one end, an annular cup-shaped member supported upon the eye and projecting above the bar, a bolt loosely holding the member in place but permitting its rotation, the cup-shaped member being upwardly beveled at its upper edge and toothed, and a nut engaging the lower end of the bolt, the nut having rounded edges.

4. A jack for piling lumber consisting of a bar twisted at its middle to provide a horizontal portion tapered whereby it may be inserted between the boards of a pile of boards and to provide a vertical portion terminating in an eye, the upper edge face of the eye being below the uppen edge face of the bar, an annular cup-shaped head resting upon the upper end of the eye, and a bolt passing through the head and through the eye and holding the head in place but permitting its free rotation.

5. A jack for piling lumber consisting of a bar twisted at its middle to provide a horizontal portion tapered whereby it may be inserted between the boards of a pile of boards and to provide a vertical portion terminating in an eye, the upper edge face of the eye being below the upper edge face of the bar, an annular cup-shaped head resting upon the upper end of the eye, and a bolt passing through the headand through the eye and holding the head in place but permitting its free rotation, and a nut engaging the bolt, the nut having rounded outer edges.

In testimony whereof I hereunto affix my signature.

MERVIN G. JOHNSON. 

